JPH04215729A - Control method for warm-air wash stand - Google Patents

Abstract

PURPOSE:To comfortably dry hands by setting the target warm-air temperature based on the atmospheric temperature when a warm air generator is operated, and controlling a heater so that the blowout warm air temperature is made the target warm air temperature. CONSTITUTION:When a sensor 28 detects hands, a control device 50 judges the selected mode, if the temperature adjustment mode is selected, the control device 50 reads the atmospheric temperature detected by an atmospheric temperature sensor 54 and sets the target warm air temperature. The target warm air temperature is obtained from the preset arithmetic equation, or it is read and set from a temperature-target warm-air temperature map written in advance, and it is set higher as the atmospheric temperature becomes lower, for example. The excitation current to a heater 42 is controlled so that the detected temperature of a blowout warm-air temperature sensor 52 is made the target warm air temperature. The warm air with the proper temperature is blown out according to the atmospheric temperature, and hands can be comfortably dried invariably.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a warm air washstand, and more particularly to a method for controlling a warm air washstand that is improved so as to adjust the temperature of the hot air according to the atmospheric temperature.

0002

[Prior Art] A warm-air washstand that detects a human hand or the like and automatically spouts water and hot air includes a washbasin, a standing wall erected on the rear side of the washbasin, Some have a water soap discharge nozzle, a water spout, and a hot air outlet for washing and drying hands provided on the front side of the vertical wall.

FIG. 3 is a perspective view of this type of hot air washstand, and FIG. 4 is a front view of the washstand.

In FIGS. 3 and 4, a counter 12 is provided above a cabinet 10 as a washbasin body, and a washbasin 14 is provided on the counter 12. A back guard (standing wall) 16 is erected on the upper surface of the back side of the washbasin 14, and a nozzle 18 for discharging soap and water for face washing, hand washing, etc. is disposed on the front side of the back guard 16. A water outlet 20 for drying hands and a hot air outlet 22 for drying hands are provided. In addition, in order to automatically start and stop the supply of soap, water, and hot air,
Sensors 24, 26, and 28 are provided in the vicinity of the nozzle 18, water outlet 20, and outlet 22 to detect hands extended downward, respectively.

A tank 30 is provided within the cabinet 10 to store the water soap supplied to the nozzle 18. This tank 30 has a configuration in which a pump 32 is attached to the side, and the pump 32 is attached to a tube 34.
It is connected to the nozzle 18 via. cabinet 1
A hot air generator 46 having a hot and cold water mixing valve 36, a water supply valve 38, a water supply pipe 40, a heater 42, a blower 44, a duct 48, etc. are installed in the interior. Furthermore, the sensor 24,
Based on the detection signals of 26 and 28, the pump 32 and the water supply valve 3
8. A controller 50 for controlling the heater 42 and the blower 44 is provided.

In the washbasin configured as described above, when a hand is put out below the nozzle 18, the sensor 24 detects the hand, and the pump 32 is activated by a signal from the controller, and the water inside the tank 30 is activated. Water soap is supplied to the nozzle 18 and is discharged from the tip of the nozzle 18. When the hand is withdrawn, the pump 32 is stopped and the discharge of water soap is stopped.

Similarly, when a hand is extended below the water spout 20 or the air outlet 22, water spouting and hot air blowing are automatically started, and when the hand is withdrawn, water and hot air are automatically stopped.

[0008]

[Problems to be Solved by the Invention] In conventional hot-air washstands, constant power is supplied to the heater and the fan blows a constant amount of air regardless of the atmospheric temperature. For this reason, hot air with a high temperature is blown out in the summer, and warm air with a slightly lower temperature is blown out in the winter, making it impossible to dry hands comfortably.

[0009] As a countermeasure to this problem, it is conceivable to detect the temperature at which hot air is blown out and to perform feedback control on the amount of electricity supplied to the heater so that the detected temperature remains constant throughout the seasons. However, even warm air of, for example, 40° C. often feels hot in the summer and feels lukewarm to cold hands in the winter.

0010

[Means for Solving the Problems] A method for controlling a warm air washstand according to the present invention includes: a washstand main body having a washbasin on its upper surface; a spout capable of spouting water toward the washbasin; or a hot air outlet capable of blowing hot air toward an area above; an air heating heater installed inside the washstand body and connected to the hot air outlet so as to be able to supply warm air; a hot air generator having an air blower; a water supply control means that detects a human body in front of the water spout and discharges water; a hot air control device that detects a human body in front of the hot air outlet and blows out hot air. The present invention relates to a method for controlling a hot air washstand, which includes means and;

[0011] The hot air washstand control method of the present invention sets a target hot air temperature based on the atmospheric temperature when the hot air generator is operated, and sets the hot air temperature blown out to the target hot air temperature. The present invention is characterized in that the heater is controlled.

0012

[Function] In the hot air wash basin control method of the present invention, when you put your hand out to the hot air outlet of the wash basin, hot air is automatically blown out, and when you withdraw your hand, the hot air blowing is automatically stopped. .

According to the present invention, when the temperature is low, such as in winter, the target hot air temperature is set to a high value, and conversely, when the temperature is high, such as in the summer, the target hot air temperature is set to a low value. Then, the amount of power supplied to the heater is controlled so that the blowing temperature reaches this target temperature. Therefore, warm air at a temperature appropriate and comfortable for drying hands is blown out depending on the temperature.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a flow chart for explaining a method according to an embodiment of claim 1. Moreover, FIG. 2 is a control block diagram for this purpose.

In this embodiment, as shown in FIG. 4, a second temperature sensor 52 for detecting the atmospheric temperature is provided near the suction port of the blower 44, and a second temperature sensor 52 for detecting the temperature of the hot air blown out is provided near the outlet 22. A first temperature sensor 54 is provided. Furthermore, the front part of the back guard 16 (other parts may be used).
A mode switch 56 is provided. This mode switch 56 has two modes: a mode (temperature control mode) according to the present invention in which the target hot air temperature is changed according to the air temperature, and a mode (constant temperature mode) in which the temperature of the hot air blown out is constant regardless of the air temperature.
This is a switch for selecting.

As shown in FIG. 2, sensors 24, 26, 28,
The detection signals 52 and 54 and the selection signal of the mode switch 56 are input to the control device 50. From the control device 50, a pump 32, a water supply valve 38, a heater 42, and a blower 4 are supplied.
A control signal is output to 4.

A computer is incorporated in the control device 50, and the following program for controlling hot air blowing is stored. (Although water supply control and soap discharge control programs are also stored, they will be omitted.) In FIG. 1, when the sensor 28 detects a hand (step ■), it is determined which mode to select. do(
Step ■). When the temperature control mode according to the example of the present invention is selected, the atmospheric temperature detected by the atmospheric temperature sensor 52 is read and the target hot air temperature is set (steps
). The target hot air temperature is determined by a predetermined arithmetic expression or is set by reading from a prewritten air temperature-target hot air temperature map having the relationship as shown in FIG. Then, the current applied to the heater 42 is controlled so that the temperature detected by the hot air temperature sensor 54 becomes the target hot air temperature (step (2)).

In FIG. 5, the lower the air temperature, the higher the target hot air temperature is set.

Note that when the constant temperature mode is selected, the process jumps from step (2) to step (2), and the temperature detected by the hot air temperature sensor 52 is set to a predetermined constant temperature (for example, 40° C.).
The amount of electricity applied to the heater 42 is controlled so that In the present invention, a plurality of constant temperature modes such as "low temperature" and "high temperature" may be provided so that a desired hot air temperature can be selected depending on the season.

[0020]

[Effects of the Invention] As described above, according to the hot air washbasin control method of the present invention, the target hot air temperature is adjusted according to the air temperature, and the blowing hot air temperature is controlled so as to reach the target hot air temperature. So you can always dry your hands comfortably.

[Brief explanation of the drawing]

FIG. 1 is a flowchart illustrating an embodiment of claim 1. FIG.

FIG. 2 is a control block diagram.

FIG. 3 is a perspective view of the hot air wash basin.

FIG. 4 is a front view of the hot air washstand.

FIG. 5 is a diagram showing the relationship between target hot air temperature and air temperature.

[Explanation of symbols]

20 Water spout 22 Hot air outlet 42 Heater 44 Blower 50 Control device 52 Temperature sensor 54 Temperature sensor

Claims (1)

[Claims] Claim 1: A washbasin body with a washbasin on its upper surface; a spout capable of discharging water toward the washbasin; a hot air outlet capable of blowing hot air toward the washbasin or an area above it. and;
a hot air generator having an air heating heater and a blower installed inside the washstand body and connected to the warm air outlet so as to supply warm air; detecting a human body in front of the water outlet; A hot air blowout control method for a warm air washstand, comprising: a water supply control means for controlling the hot air outlet and discharging water; a hot air control means for detecting a human body in front of the hot air outlet and blowing out hot air; A first temperature sensor that detects the temperature of the hot air generated by the hot air generator; and a second temperature sensor that detects the atmospheric temperature are installed, and based on the detected values of these temperature sensors, The hot air control means sets a target hot air temperature based on the atmospheric temperature when the hot air generator is activated, and controls the heater so that the temperature of the hot air blown out becomes the target hot air temperature. A method of controlling a hot air wash basin.